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Electronic Principles

Electronic Principles
Holes are the minority carriers in which type of semiconductor?

n-type
Extrinsic
None of these
Intrinsic
p-type

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Electronic Principles
In a step-down transformer, which is larger?

Impossible to say
Secondary voltage
None of these
Primary voltage
Neither

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Electronic Principles
At room temperature an intrinsic semiconductor has

None of these
many free electrons
many holes
a few free electrons and holes
No holes

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Electronic Principles
What is the inductive reactance of a 0.1-H coil that is operating at 1000 Hz?

444 Ohm
None of these
Less than 1 Ohm
628 Ohm
100 Ohm

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Electronic Principles
The transistor has a collector current of 10 mA and a base current of 40 mA. What is the current gain of the transistor?

0.25 µA
350 µA
300 µA
250 µA
None of these

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Electronic Principles
An ideal voltage source has

None of these
A load-dependent current
A load dependent voltage
Zero internal resistance
Infinite internal resistance

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